Force-feed carbureter.



B. IVOR.

FORGE FEED OARBURETER.

APPLIGATION FILED JULY z5. 1910.

Patented sept. v26, 1911 5 SHEETS-SHEET 3.

W/TNESSES man ' B. IVOR.

FORCE FEED OARBURBTER. APPLIOATION FILED JULY 25, mo.

1,004,031 l Patented Sept. 26, 1911.

5 SHEETS-SHEET 4.

WM By Afro/mf B. IVOR. FORGE FEED OARBURBTER. APILIoATIoN FILED JULY as. 1910.

m5 t. T .M pm V 7 E MHH d H a m MM u W n ,w n A n, so O m u 3 l i n. .4 a 7. 3 .w M 4 o, I M w. O, 1

x u l BARRY Ivon, or CHICAGO,Y ILLINOIS.

" Foncia-.FEED CARBURETER.

To allwhom it mayconcem:

Be it known that I, BARRY of the United States, residing Vat Chicago,

in the county of Cook and State of Illinois,

have@ invented Certain Improvements in Force-Feed Carbureters, of which the fol lowing is aspecification.l

This inventionl relates to certain improve? mentsin a device somewhat similar'in its nature and construction to those set forth in iny'ico-pendi'ng applications' foiiLetters-Y ,i vPatents fory led January.,` 18,1910, Serial Number 537,872,and' February 25, 1910, Serial Number 545,868, and' some of the objects of the present invention are like those disclosed ,1 in the above-named "ap lications, butother stain. during its operation they proper pro'l `portions-of air and hydrocarbon admitted done;lto provide automatic means for the-l objects, advantages an results Will-'be attained thei'eby,and the same, in part, are as- .follows; to provide a compact,`si`ii`ip'le, inexpensive `andeiiicient carbureter for explosionv or hydrocarbon' engines i of various types4 for various purposes, but"inorepar-z ticularly for gasolene engines for operating automobiles; to dispense with theordinary-` oat-chamber and float-valve' therefor, in

which chamber the liquid `fuel is usually maintained approximately atV a constant levell by said valve, the use;y of which chambers and valves is ol'ijectionable` for the-1reason saidvalves are liable to clog, to'be misi placed -by the vibrations ofl the machine 'orunderchargingandto permit flooding ofthe engine, besides 4the' loat-chamberoc'- cupies considerable-space; to provide a car buieter Ihaving means to adJust and mainthereto, also to introduce the air-to the carbureternlso as to `produce a more thorough' and complete mixture than is `ordinarily admission of air, to the carbureter, in proper proportions, undervdifl'erent speeds of they engine; to furnish umeans for withdrawing any surplusage ofgasolene or hydrocarbon 1 :whiclinnay collect in the mixing chamber a reservoir or and for forcing it backl into channels leading therefrom.'

Other objects and advantages of the invention Will be disclosed in the subjoined description and explanation.

Ivor', a ycitizen improvements in carbureters,

i Appiication mea July 25, 1910.` sriai No. 573,745.'

'In the'` accompanying drawings which illustrate an embodiment of the inventionf-l Figure 1, is a vertical central sectional View ofa carburetor embodying the invention;

yFig'. 2, isa vertical vieivlpartly infsjection andl partly in elevation ltaken on line 2 2. of Fig. '1, looking inthe direction indicated Specification of Letters Patent. Patented Sept. 26, 191] .i

by the arrows; Fig. 3is a plan View lof, the .60

lower portion of the casing with the upper portioii'or mixing chamber thereof removed andillustrating the construction of the valve for the mixing chamber; Fig. L1, is aude-Y veloped vertical sectional view takenmonie indicated by the'arrowisl; Fie, fo. ,sfaplanf n. regulating the discharge tnii'f""giolenc 'or hydrocarbon to tlieffmixiiffg chamber: Fig. 6, is aplan` viewffpartlyf; in'A section and partly in elevation-,of apart of' the `lower `portion of the casing with" the valve for the mixing chiii'nber removed `as well as the .valves for the inlet or-air removed; Fig. 7,

is a lperspectiveview of one, of'the disks used for regulating the needle valve Fig. 8, is a similar view lof thearin'Lcarryiug-Slceve which connects the' pump plunger to ,the

valve of the 'mixing cliamber';"l"ig."9, is a vert-ical sectional view'of plungerI carried'fby. -helivalveiof the miti-1' iiigchunborforfxvjtlidaawing surplus fl-uid' one ofthe tubularr which llcontrol cerfromv said'y .chamber f Figi 511, lis "a `horizontal I: sectional viewV ofmpaizt' ofwtli'elower nor-lv y' tion' of' the casing"slioivingthe"valves for 'cont-rolling the inlet 'of''air'yF-ig. 12, is an end view of the plug employed for holding the ball-valve in the'cavity of the lower portion ofthe i and Fig. 13, is'a side view of said plug.l

f l'Likenumerals of reference, refer to correspondino' parts throughout the different views o the drawings. i

The casing of the carbureter is 'shown 'as consisting of upper and lower yparts 20,

and 21, respectively, which are' hollowvand a pai-tof each, circular-iii shape. The

plunger shown in Fig.4 1Q;

lower portion of the part 20,'and the upper portion of the part 21, .are adapted for screw-engagement with one another, and the rsi `ing and has a upper portion of the part 21, is provided with a valve seat 22,- which is preferably.

inwardly and downwardly inclined as shown in Figs. 1,v and 2, ofthe drawings for coaction` with the valve 23, ofV the mixing chamber 24, with which the upper portion 20,. of the casing is provided.. The lower end of'y the cavity 25, or air-chamber in the portion 21, of the casing, is closed by meansv the casg of a plate 26, which ,is fastened to central opening 27, for the portion of 'the pump body.

reception of a and operation of apart of and recept-ion a reciprocating sleeve 28, which surrounds the lower portion of the pump body and is connected to the pump plunger as will be presently explained, Thepart 21, is provi-ded on its wall with an extension 29, having two valve chambers 30, and 31, which communicatenwith the airchamber 25, and have their outer ends screw v lthreaded to receive valve seats 32, and 33,

respectively each of which seats is annular in shape and provided with cross-pieces 34,

and 35, through suitable openings 1nv which 'are extended valve stems 36, and 37 which carry valves 38, and 39, to co-act with the valve seats 321, and 33 respectively. lEach of said valve stems has at its inner end Va collarpor` projection 40, against which the inner end ofsprings'4l, and42, which surround the stems 36, and 37, respectively u lrest, theotherends of'which springs rest against .the valves 38,` and .39, respectively, whichvalves are loosely mounted on their respective stems. .The outerend of each of said stems is-screw-threaded to receive nuts 43, arid 44, .employed -for adjusting the tensionvof Vsaid springs. The portion. 21,. of the casing-"is provided with van inward exten sion 45, opposite a portion voit' the extension .29, 'and'fsald Vinward extension 45, 1s provided atI its inner portion witha vertical ex tension 46, `lforming the pump. cylinder or body, which body is located centrally within the part 21, and is provided with bore or opening, the upper portion of which v'is internally screw-threaded. The lower por- 'tion of the bore oropenmg ofthe pump body is 'preferably providedwwith metallic bushing 47, and the upper portion of said bore has screwed thereinto ahollow plug 48,

the lowerportion .of whichv is internally screw-threaded to .engage a valve seat 49,

for a- -ball valve 50, located in the cavity of 'the plug 48, the upper-end of which is provided with a'downwardlytapered valve seat v lower :end of a stem 53, the upper portion of which projects through the top of the part 2O, of the casing and is screw-threaded.

Mov'ably located in the cavity of the plug 48, is a tubular guard 54, which has its lower portion slightly tapered and its lower end formed with a seat 55.`f or the ball valve. 50,

a verticall for a needleV or tapered valve` 52, on the.

see Figs. 1, and 9, of the drawings. The guard 54, also has in its lower portion a series of ducts 56, and a vertical channel 57, with which they communicate. at their inner ends. Located :within the guard 54, is'a coiled spring 58,' the lower end of which rests 'against the lower portion of said. guard and the .upper end against-the upper portion of the plug 48, so as to normally press the Auard 54, downwardly against the ball valve 50, which controls the supply .of liquid hydrocarbon from the pump throughthe opening 59, inthe valve seat 49, to the mixing nally screw-threaded and proj ects at its upper end a slight distance through the opening 27, into the air chamber. The upper portion Aof theXsleeve 28, see Fig. 2, has diametrically disposed and upwardly extended arms60, the upper portion of each of which is .provided with a lateral extension 61, which are secured to the lower surface of the valve 23, of the mixing chamber. Screwed into the lower end of the sleeve 28, is a plug v62, which has `a ball and socket con-` Vnection 63, on an upward' projection- 64, on said nut with the lower end ofthe pump plunger 65, which is located within the metallic bushing 47, of' the Apump body.

` Surrounding the sleeve l28, and' resting at one of its ends against the plate 26, of the casing-is a spring 66, the lower end of which rests against a nut 67, screwed on the.

lower portion of the sleeve 28, which nut is emp oyed to regulatethe tension of said spring. By means of the. ab0ve described construction and arrangement of the pump body and its connections with the s1eeve28,

it -is'evident f tha't. the plunger 65, may be suitably adjusted by means of the screw plug 62, and that asthev plunger and. said l plug are connected together by means of the ball and socket joint 63, the'plunger will always be maintained in perfect alinement with the cavity of the pump body and it ,is further. evident thatv the grooves 139, in said body will 'affordy means for the-escape chamber ofany liquid hydro-- into the` air carbon which mayleak from the pump into the sleeve 28, .in the operation of the de-l vice. The grooves139 will also prevent an air cushion being formed between the lower end of the pump body and the plug 62, in said sleeve. Thev inward extension 45, of the part 21, of the casing is provided with an opening plug 69, which is provided with a channel 68, `into which is fitted a t efr 70, communicating at one of `its ends `with a channel-71, extendin'gffrom the` inner por'- tion of the opening 68,/,througli'a part-ofr the extension 45,` and metallic, .bushin 47,

c iamlower portion of this guard lis heldv in co'n- I tact with thei'alve 74,*by, means of a spring 5S, resting at oneof its-ends yagainst the top of the chamber 72,-and at'its other end against the lower portion of .said guard The guard 5,4,` used in: the chamber 72, :is preferably provided near its upper end with an opening 75, to registerwith the channel 70, but said opening'is, not essential in the guard 54,-whi0h is used in the cavity of the screw plug 48, in the upper part ofv the pump body, otherwise, these tubular guards are similar in construction vand performlike i The outer portion of the plug l functions. 69, is provided, withva,verticallydisposed valve chamber 76, in the lower ,end ofiwhi'ch', is located a plugy77, which has in its innerv portion an=opening 78', rtolreceivathe lower end of the` stem of` a float valve 7 9, located in the chamber 76, whiclivalve whenraised sufficiently rby the accumulation of liquid in the chamber; 7 6, will close the lower endf of a channel -S O-iormed in the plug l69 which channel communicates at kits other end with a channel 81, leading from the opening 68, through the extension L15,into the cavity y .of theplug 48, just above the ballV valve 50, therein. t

By reference to Fig l1, it will be seen that thechambers 72, and 476, have communication with one another through a port l82, formed Ain the .plug 69, and that said chambers extend upwardly through the lower end of a downward extension 83, on 'the plug 69, which extension -is externally screw-threaded and has secured thereon a fitting 84, to the lower portion of ywhich a pipe 85, leading to and within a reservgir,

or tank 86, for liquid hydrocarbon,v which reservoir may be suitably located and supported,.is connected byl means' of a coupling 87, of a suitable kind, ,Thus it will, be sech-l that the cavity 88, of the fitting 8,4, 'will have communication with, Ia supply i of hydrocarbon-'from which cavity the same will be supplied to the pump, and from and by means of the latterforced into the mix4 ing chamber. v eferringnow to Fi SW3, 4, 6,- and `1,0, of ytlie drawings, it'wil be seen that the' inward extension. 45, offtbe part. 2., of the `p1ovided witha',lateral-projection 103,

casing is provided with avvertical' opening.

89, which extends from the iipper `surface of said extension to near it'slower'surface anc-lco'm'inunica'tes ,through a* channel 90,'

with ra vertically disposedopening or chain- 7 ber 91, ywhich' extends upwardly from andyin VIthe-lower"portion Aof said extension and has communication atlits upper end w1th` one end of' an outlet pipe 92, the other end of which may communicate with the upper 7 portion of the reservoir 86. Located in the chamber 91, is an apertured valvecasing 93, whichI is provided at lits lower end with a drain cock 94', and has "seateddn its 'upper end a float valve 95to prevent the return-8o flow of liquid'through the pipe 92. Movably located in the openin 89, is'a plun er 9G, which is provided wit a longitudina ly` extended bore or discharge orifice 97, which communicates'at its lower end with a cham' 85 bei' 98; forfa ball' valve, 99, which rests onv a valve seat 100, 'fitted ih the." lower portion-A o saidchamber', This valve'seat is provided. in its periphery "with a series of groovesA 101, and with'acentral openinglOQ, for the' 90 passage` of liquid'.

The upper portion1 `:ofthe plunger 96, is i which rests againstthe 'lower' surface oftthe,A valve 23of the mixing chamber through-a suitable opening 104,` in which, the upper\ which may be'lsecured' in such position "by means of anut 105,`engaging the 'upper end of the plunger, which'is alsoprovided with, l100 laterally disposed channels 106,*whch'co1nmunicateat one oftheir ends with the bore" or orifice 97, andv'at their'oth'er ends `with an annular groove 107, formed in the upperA surface ofthe valve 23', around the central-|105 i opening 108, in Iisaid' valve throughwvhich i, the upper portion of-'the pump body is extended. The groove 107, in the valve 28, is deepened towar'd the' opening 104, in said valve qsonas to conduct'any surplus liquid 110- whch may collect on'th'e valve 23, to the channels 106, and bore 97, "in'said plunger".`

`For the purpose of guiding any excess liq uid hydrocarbon'from the mixing chamber i into the groove 107, of the valve therefor,

as 4well, as for the urpose' of directing 'currents of air admitted to the mix-ing i chamber through said valve, the same A' is provided at its periphery with ansinwardly anddownwardly inclined {iange 109,

having aseries of upwardly and inwardly directed openings 110, for the passage; of air which flange is adapted to rest on the inclined seat ,22, when thevalve is closed.

The upper part`20, ofthe casing is` preferably formed with a circumferential chan-v nel 111, or water jacket for the circulation ,of water used` to increase the'v temperature of y the mixing chamber whichitfsurrounds' and 1130 saiid part isprovided at its upper end with y 'pai-t of jthe plunger 96, is extended' and 35 l 53, except when desired.

a hollow extension or yconduit 112, which communicates with the mixing chamber and may have one of-its ends suitably connected to the engine, .not shown.` The other end of the extension 112, is provided with a backfire-valve 113, of the ordinary construction.

Journaled in the extension 112, is a shaft 114, on which is mounted a damper 115, to regulate the passage yof the mixture from the mixing chamber to the engine. Secured near one of its ends to the shaft 114, above the extension v112, is a lever 116, which `may be suitably connected at one of its ends to a lever (not shown) on the machine, used. for

regulating the supply of carbureted vair to -the engine. -Near its other end the lever 116, is provided witha series of openings 117, to receive a pivot'118,vused for pivotally connectingl one end lof a link 119, to, sald lever the other end. of which link is pivotally connected to a rotary disk 120, used for regulating the supply of hydrocarbon from .the pump to the mixing chamber. Thedisk 12,0, is provided with a hub 121, extended' through an opening 122, in

the upper portion of the extension 112, and with a cam-faced upward extension 123, to

co-act lwith a cam-faced downward extension 124, ona disk-125, which is adjustably mounted onfthe upper portion of the needle y valve stem 53, which stem lcarries on its upper. end a ratchet wheel 126, ladapted for engagement with a spring'A pawl 127, extended upwardly from the disk 125, so as toA prevent theturning of the valve stem Extended'upwardly from the extension 112, are a number of uprights 128,. two of which are herein shown as beingwprovided Anear their upperends with transversely disposed screws or projections .129, which lare adapted to fit in recesses y130, formed in i. the periphery of the disk 125, so as to prevent the same turning, yet permitting of its slight vertical movement. lVhile I have shown two of the' uprights 128. each provided with a screw 129, yet it is apparent that a sc'rew may-be omitted from one `of said uprights and that the remaining screw will prevent. the disk 125, turning, yet allow. of its vertical movement, yet by employing two of the screws, they, together with the uprights,'will form a better guide end of which spring rests against the -inner surface of the uppervport-ion ofthe extensionl 112, to press the stem 53, downwardly so as to hold the cam-faced extension 124, in yielding contact with the similarly shaped extension 123, of the regulator for the hydrocarbon. That end of the supply pipe 85, within thereservoir 86, is provided with a valve casing 134, in which is located ay ball valve-135, to close the valve seat 136, in said casing against back pressure in the supply pipe, the upper portion ofwhich within the receptacle 86,.is provided with a priming basin 137, into which hydrocarbon may be poured when desired,

access to said basinbeing had by removing a screw plug 138, located in a suitablefzopenr-l ing inthe upper portion of the reservoir.

From the above description it will be understood that the improved carbureter lconstructed according to the invention is susceptible of considerable modification with` Aout material departure from the principles and spirit of the invention, and for this reason I do not desire to be understood as limiting myself to the precise form and arrangement of the several parts herein set forth, in carrying out my invention in practice. i l

The operation is as followsr-Gasolene or other liquid hydrocarbon is supplied to the pump from the cavity 88, of the member 84,

, which, as before stated,'has communication through a pipe.85, withthey reservoir 86,

for hydrocarbon. 'Through the suction or operation of the engine, the valve 23, of the mixing chamber will be raised until the openings 110, therein, are placed in com' munication with the air chamber 25, at

which time -air will pass through said openings and be discharged inwardly and up wardly into the mixing chamber above the upper end of the pump body. In the upward movement of the valve 23, the pump plunger 65, being connected thereto by means of the sleeve 28, and arms G0, will be caused to rise in its cavity and thus force` gasolene therefrom through the channel or Y port 59, in the valve seat 49, in which operation the ball valve 50, will be slightly, raised thus allowing the liquid to pass through the apertures 5G, and 57, of the tubular guard 54, and from thence out through the port or valve seat 51, vinto 1the mixing chamber, the quantity of liquid being regulated by means of the needle valve 52, on the valve stem 53',

.which maybe suitably adjusted at its upper end within the extension 124, by turning the wheel 126, in the proper direction, which wheel willlbe held in fixed position by means of the spring pawlf127`, which engages the same. As soon as the suction inthe mixing chamber' ceases or is overcome, the spring 66,

will force the valve 23, sleeve 28, and pump plunger downwardly, in which operation liquid willbev drawn through the opening in` the valve' seat T3, openings72, inthe plug (3S), opening 'i'a'a-ilnlthel guard 54, channels or 5 ports-"TO,I andl 71, into4 the cavity of the pump body, afterpvlrich the 'above-named operamft-io'p will," repeated. ,.In the actionof the pump, thejllbulhrguard .54, in `theupper portion of'lhc'pump body, aswell aswthe` similarl gua-rd inthe openinu f2, will be pressed upwardly by means o? their respec- Vtivepl'iv'all "'vahesiand the pressure applied thei`-eto,` but assoon as vpressure, is removed tlISpI-iiigs 5,8, insaid guaixls'willpress the sainefagainsttheball valves thus causing tlenrto"be accurately seated, in which posiltionstheywill be held against aceidentaltI displacement owing to the vibrations of the machine. When the ball valve 74,v in'the inlakeport is' raised by the suction caused by the-downward stroke of 'the plunger, it is evident that the" opening 75, in the tubular guardV 54,- for saitl'valve,Which opening is somewhattl'arger than the port 70, will allow thewliqu-ilfto llpassfrom-said' tubular guardy in any positionfthat the -latter may occupy.` To re`\fent`?'tlc pump from discharging exvessiie quantities of gasole'ne'into' thennixf ing chamber-,the by-pass 'channels Ior ports 80,- and 81, are employed for itis apparent that the surplus liquid will beforced downwardly through said ports into the chamber TG, from `whence it will pass' through the portf82, into `:the inlet port from which' it will be again drawn into the pli'mp.

ln the initial action of the p1lmpwherth'elV l'loat valvey 79,2.in'the chamber 76, is maintained. by the accumulation of liquid in ysaid chal'nber at a pointtoo low to close the port 80it isevident that some of the liquid will be drawn upwardly through theports 80,

and 8l, and discharged into thej mixing chanlbei-,l'ut 'as soon as the valve 79, closes the portt), the excess ofthe surplus hydrocarbon will pass through the channel 82, into tht. supply port, as before-stated'. Should .any ,siri'plus hydrocarbon 'bed isc-hinged in to the mixing chamber and sliould'the same collect on the upper-surface of' the valve 23,' it is apparent that the groove 150?, wvill conduct .the liquid to lthe channels 106,-.in the' plungei''l, from -which channels it "will pass' throughzthe bore 97, into" the channel `or chamber 90, (see Fig.'4,) fromwhich'chamber it. will be discharged through -thevalvecasing ,93,.and pipe 92.' Byl'this aaran'ge-l ment 'it' is n'lanvifest'thattthe surplus lliquid held by, thevalve 23, vwill bepumpedoutxofq the same through thel instrumentalityof the" plunge-1312, and .its ball.-valve",99,whichiis seated in, che lower. end v of said ffllger.

By reference to Fig.,1l, `which#"illustrates the Valves Whiohfeontrol 'andffregulateithe" admissionof air tothe ta-ire'lffnber," it Will be seen and understood that the eommunicatin bon valve 38, is smaller; than the :valve 39, andthat'the spring-A1, wliiclractuates the first-named valve is also smaller or. of less tension than the spring 42, which actuatesfthe valve 39, and thisarrangement-is employed-so that and requires a small amount of air, the lvalve when the engine is running atllowlspeed,`

38,` will 4beautomatically operated by the action of the engine, but when the speed of the latter is lncreased, and a greater'quantity of air is required, the valve 39,- Will be lautomatically actuated .as well as the frstnamed valve, thus supplying the necessary quantity of air 4to the air chamber from Whichdt will pass into the gnixing chamber and be'` charged with hydrocarbon from which chamber it will pass through the exytension112, into the engine. In order to regulate the quantity of...,hydrocarbon ad-v f mitted to. themi-xing `chamber the lever 116,`

through its connection with a lever ,(nt- 1 shown) on the machine, -maybe moved so" as to turn the cam-faced extension 123, `from the position shown in Fig. 2, `which-operationwill .cause the cam-facedextension 124:,

rval'vestem, 53, andvalve `52, `to be raised,

thus openingwthe valve seat or vdischarge port 51 to thedesired extent. The movement o1'2 the extensions 123, and 124, can be regulated by changing the pivot '118, ofthe link 119, from onejof the `openings 117, to

another'in the lever 116, which lever is fixed on the shaft 11d-sons to turn the damper 115, mounted thereon atthe,.required time 'to control theadinission of themixture to the engine. 4 v i Having thus fully described my invention what I claim as new and desire to secure by Letters-Patent is Y 1. yA carbureter having in combination a carhtreting chamber, 'means to admit air thereto, fa pump extended into lthe easing and having a valve-controlled..intake port communicating',with a 4supplyof hydrocar. bon and a valve-discharge port com1nunicat ling with the carbureting4 chamber, and also having a valve-controlled by-passcommunieatingfat Aone" of ,itsnends -with the .upper I portion ,of thepdischargeprt and atnitsl' 'other end. withtheI intakeI port, a suction A"eontiol valve lfor the carbureting Ychamber 'connected tothe pump plunger, and .means to return saidvalve andjpllmgcr, f

' 2. A 'carbur'eter havlngzin'combination a..` l120 carbure'tiiig chainber, jme-ans to admit. :air

thereto, a pump extendedinto ythecasin'gf.-

'and having a'valve-cohiitvrolled intake .port

With av supply of hydrocaulv and a valve` vcontrolled dischargeport communicating with the carbureting chainbei-,and also "having a valve-controlled by- "pass communicating at one `of its ends :with -`the discharge port and at tsother end 'with the intake port, and a spring actuated valve connected to the pump plunger to open and close the carbureting chamber.

3. A carbureter having in combination a carbureting chamber, a pump extended into the casing and having a valve-controlled intake port communicating with asupply of hydrocarbon and a valve-controlled dis- 'take port communicating with a supply of hydrocarbon and a valve-controlled discharge port communicating with the cari l engine.

. charge port communicating with the car-v 10 bureting chamber, -said pump also having a valve-controlled by-pass communicating at one of its/ends with the discharge port near its vdischarging end and at its other end with an inlet, a suction control valve onthe carbureting chamber connected. to the pump plunger,- vmeans to ret-urn said valve and plunger, means to automatically regulate the 4admission of air tothe carbureting chamber, and means to simultaneously regulate the admission of hydro-` carbon to the said chamber and -the mixture of air and hydrocarbon to the engine.

5. A carbureter having in combination al carbureting chamber, a pump extended into the casing and having a valve-controlled intake port vcommunicating with asupply of hydrocarbon and 'a valve-controlled discharge port communicating withl the carbureting chamber, said pump also having a valve-controlled by-pass communicating at one of its ends with the discharge channel near its discharging end and at its other end With'an inlet, a suction control valve for the carbureting chamber connected to the pump plunger, means to return said valve and plunger, means to automatically regulate the admission of air to the carbureting chamber under variable speed of'the engine,

and means to regulate the admission of hydrocarbon to.the carbureting chamber. and the mixture of air and hydrocarbon -to the 6. -A carbureter having l.in-combination a carbureting chamb'er,'"means to admit air' thereto, a pump extended into the casing and having a valve-controlled intake port 'communicating with la supply of hydrocarbon and a valve-controlled discharge -port communicating Withthe carbureting chamits en nel, communicating with the` carbureting .chamber anditsgother. end with a suitable plunger(V ber, a suction control v alve for said chamber, connected to the pump plunger, said valve having a valve-controlled dischargeorifice communicating at one of its ends with the carbureting chamber and at its other end with an' ulet therefor, and means to return the valve ofthe carburetingV chamber and plunger. l l

7. A carbureter'having in combination a carbureting chamber, means to admit air thereto, a pump extended into the casing and having a valve-controlled intake port communicating with a supply ofhydrocarbon and' a Valve-controlled discharge port ycommunicating with the carbureting chamber, said pump'alsov having a` valve-controlled by-pass communicating at. one of its ends with the' discharge port near its discharging end, a suction control valve for the carbureting chamber connected to the .pumpv plunger, said valve having ,a valve-con'- trolled orifice communicating'at one of its ends with the carbureting chamber and at, its other end with an outlet therefor, and means to return the valve of the carbureting chamber and said plunger.

8. A carbureter having in combination a carbureting chamber, a pump extended into the casing and having a valve-controlled in,-` take port communicating with a supply'` of hydrocarbon and a valve-controlled dicharge port communicatingjwith thecarb'ureting chamber, said pump also having a -valvefcontrolled by-passA communicating at one o'its ends with the discharge port near its discharging end, a suction control valve for the carbureting chamber connected to the -pump plunger, said 'valve having a valve-controlled orifice communicating at' Hone of its ends With-the carbureting chamber and at its other end with an outlet there*v for, means to return the valve 44of the carbureting chamber and said plunger, and means to regulate the admission :of both air and hydrocarbon to thecabureting chamber.

v9. A carbureter having in'combination a carbureting chamber, 'means toy admit 'air thereto, a pump extended linto the casing and having a `valve-.controlledA intakeport communicating with ai supply of hydro-fy carbon .and 'a valve-controlled discharge port communicating with the carburetingchamber, a suction controltvalve for saidv chainber connected to thep ump plunger, a

suitably incased plunger; having.'y afvalvecontrolled discharge-channel extended 'therethrough,.sa1d plungerconnected at, one of s to said valve, one endof said chanoutlet therefor, and means to'freturn the valve of the carbureting chamber andsaid 10, 'Azcarhureterhaving in a carburetingblchamber and au inward exterision provided with a pump body and a vertical pen-ing extended troni the upper portion of said inward'extension, a plunger 'in the pump body,a suction control valve for the carbureting chamber connected to the pump plunger, said pump lia'vinfrv a valvecontrolled intake port and a valvecontrolled discharge port communicating with the-carbureting` chamber, another plunger located in the opening of said extension and having a valve-controlled channel extended therethrough, said plunger connected at its upper portion to the valve of the carbureting chamber, said channel communicating at one of its ends with the carbureting chamber and at its other end with a suitable' conduit, and means to return the valve of the 'carbu reting chamber and the pump plunger.

11. A carbureter having in combination a carbureting chamber, means to admit air thereto, a pump extended into the casing and having a valve-controlled intake port communicating with a supply of hydrocarbon and a Valve-controlled discharge port communicating with the carbureting chamber, a suction control valve for the earbureting chamber connected to the pump plunger, means to return said valve and plunger, a spring pressed needle valve mounted to open and close the discharge port of the pump', a cam-faced extension adjustably mounted on the upper portion of the stem of the needle valve, another cam-faced extension rotatably mounted on said `stem to contact with the first named extension, and means to turn the said rotatably mounted extension.

12. A carbureter having in combination a carbureting chamber, means to admit air thereto, a pump extended into the casing and carburetiiig chamber and having a valve seat in its end within said chamber, a suction control valve for the carbureting chamber connected to the pump plunger, moans to return said valve and plunger, a needle valve mounted to open and close thc valve seat in the pump, a cam-faced extension ad justably mounted on the upper portion ot' the stein of said needle valve, another camfaced extension rotatably mounted on said stem to co-act with the firstiiamed extension, a conduit communicating with the carbuf reting chamber, a da mpcr shaft journaled in the conduit, a damper on said sliat't within the conduit, a lever tixed to said shaft, and a connection pivotally united at one of its ends to said lever and at its other end to the said rotatably mounted extension.

13. A carburetor having in combination a carburet-ing chamber, means to admit air thereto, a pump extended into the casing and having a valve-controlled intake port communicating with a supply of hydrocarbon and a discharge port communicating `thcreto,`a pump extended into the and having a valve-controlled intake port- Wth the'carbuibting chamber, a ball valve seated in said ,discharge `pprt, a spring pressed tubular guardliaving an'opcning in its lower portion and resting on said valve, a suctioncontrolnvalve for thejarbui'eting chamber connected to the pump plunger, and ineans to return said valve and plunger.

14. A carburetor having in combination a carbureting chamber, meansl to admit .air casing communicating with a supply of hydrocarbon and a discharge port communicating with the carbu'eting chamber, a ball-valve located in said discharge port, and a spring pressed tubular guard having an opening in its lower portion and located, in said port and resting against said valve.

15. A carbureter having in combination a f carbureting chamber, means to admit air thereto, a pump extended into the casing and having'a discharge port communicating with the carbureting chamber. a ball- Yalve located in said port, and a spring pressed tubular guard having an opening in its lower portion and located in said port and resting against the ball valve therein.

.16. A carbureter having in combination a carburetiiig chamber, means to admit air thereto, a pump extended into the casing and having an intake port and a discharge port, the latter communicating with the carbureting chambe and the former with a supply of hydrocarluin, a ball valve. in each of said ports, and a spring pressed tubular guard having an opening in its lower portion and located iii'each of said ports and resting againsteacli of said ball valves.

1.7. A carburetor having in combination a carbureting chamber, means to admit air thereto, a pump extended into the casing arid having an intake p'ort and a discharge port, the latter communicating with the carbureting chamber and the former with a supply of hydrocarbon, a ball-valve seated in the intake port` and a spring pressed tubular guard having an opening in its lower portion and located in said port and resting against said valve.

1S. Acarbureter having in combination a carbureting chamber. a pump extended into the casing having port communicating with a supply of hydrocarbon and a valve-controlled discharge portI communicating with the carbureting chaniber. a suction control valve t'or thecarbureting chamber connected to the pump plunger` said valve having a series of openings near its periphery and provided on its upperksu'rt'ace with an annular groove, and a discharge orifice communicating at one of its ends with said groove and at itsotlier end. wlth a suitable channel. and means to return the valve of the carbureting chamber and plunger.

iis

' 19. carbureter having in combination a pression in its upper surface cmmunieating carburetmg chamber2 a pump extended into Wlth an outlet eopenln 1n said' valve, and Saul-'easing and havmg an intake port and means to return sind vaye and plunger.

a discharge port communica-ting with the BARRY IVOR. earburet-ing chamber, a suetionrcontrol Valve Witnesses:

for the carburetlng chamber connected to CHAS. C. TILLMAN,

the pump plungenand having a drain de- J. E. HANSEN.

Copies of this 1m.1:ent v may be obtained for iii-re cents each, 'by addressing the Commissioner of Patents,

' Washington, 1D. C. 

